How to remain logged in to college Wi-Fi network?

Every time my iPhone goes to sleep or is lock mode, it disconnects from the college's Wi-Fi. I want to know how I can remain logged in.

Whenever u connect next time select automatically connect to this network option if this option is seen by u reset all current WI-FI connection n then try
check blog also it will help you for some more topicss
http://dixitmicroit.blogspot.com

https://discussions.apple.com/...2#23517622
google iphone Wi-Fi lock mode